procval.c File Reference

#include <errno.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include "lite.h"

Include dependency graph for procval.c:

Functions
char *	vreadsnf (char *line, size_t len, const char *fmt, va_list ap)
	Similar to readsnf() except it takes a va_list argument. More...
char *	readsnf (char *line, size_t len, const char *fmt,...)
	Read first line from a file composed from fmt and optional args. More...
int	writesf (const char *str, const char *mode, const char *fmt,...)
	Write a string buffer to a file composed from fmt and optional args. More...
int	vreadllf (long long *value, const char *fmt, va_list ap)
	Same as readllf() except it takes a va_list argument.
int	readllf (long long *value, const char *fmt,...)
	Read 64-bit integer value from a file composed from fmt and optional args. More...
int	readdf (int *value, const char *fmt,...)
	Read integer value from a file composed from fmt and optional args. More...
int	writellf (long long value, const char *mode, const char *fmt,...)
	Write 64-bit integer value to a file composed from fmt and optional args. More...
int	writedf (int value, const char *mode, const char *fmt,...)
	Write integer value to a file composed from fmt and optional args. More...

Detailed Description

Author

Joachim Wiberg

Date

2023

Copyright

ISC License

Function Documentation

readdf()

int readdf	(	int *	value,
		const char *	fmt,
			...
	)

Read integer value from a file composed from fmt and optional args.

Parameters

value	Pointer to where to store read integer value.
mode	An fopen() mode string, e.g. "w+".
fmt	Formatted string to be composed into a pathname.

Returns

result of operation, with errno set on error.

readllf()

int readllf	(	long long *	value,
		const char *	fmt,
			...
	)

Read 64-bit integer value from a file composed from fmt and optional args.

Parameters

value	Pointer to where to store read 64-bit integer value.
mode	An fopen() mode string, e.g. "w+".
fmt	Formatted string to be composed into a pathname.

Returns

result of operation, with errno set on error.

readsnf()

char* readsnf	(	char *	line,
		size_t	len,
		const char *	fmt,
			...
	)

Read first line from a file composed from fmt and optional args.

Parameters

line	Pointer to line buffer.
len	Size of line buffer.
fmt	Formatted string to be composed into a pathname.

Returns

On success, this function returns the line read from the file, with any trailing '
' chomp()ed out. On error, NULL.

vreadsnf()

char* vreadsnf	(	char *	line,
		size_t	len,
		const char *	fmt,
		va_list	ap
	)

Similar to readsnf() except it takes a va_list argument.

Parameters

line	Pointer to line buffer.
len	Size of line buffer.
fmt	Formatted string to be composed into a pathname.
ap	List of variable arguemnts from va_start().

For details, see readsnf().

Returns

same as readsnf().

writedf()

int writedf	(	int	value,
		const char *	mode,
		const char *	fmt,
			...
	)

Write integer value to a file composed from fmt and optional args.

Parameters

value	Integer value to write.
mode	An fopen() mode string, e.g. "w+".
fmt	Formatted string to be composed into a pathname.

Returns

result of operation, with errno set on error.

writellf()

int writellf	(	long long	value,
		const char *	mode,
		const char *	fmt,
			...
	)

Write 64-bit integer value to a file composed from fmt and optional args.

Parameters

value	64-bit integer value to write.
mode	An fopen() mode string, e.g. "w+".
fmt	Formatted string to be composed into a pathname.

Returns

result of operation, with errno set on error.

writesf()

int writesf	(	const char *	str,
		const char *	mode,
		const char *	fmt,
			...
	)

Write a string buffer to a file composed from fmt and optional args.

Parameters

str	Pointer to string buffer, may be multiple lines.
mode	An fopen() mode string, e.g. "w+".
fmt	Formatted string to be composed into a pathname.

Returns

result of operation, with errno set on error.